"Cygnus X-1" meaning in English

See Cygnus X-1 in All languages combined, or Wiktionary

Proper name

Etymology: From Cygnus + X + 1. From being the first discovered discrete astronomical X-ray source (an X-ray star) located in the constellation of Cygnus. Etymology templates: {{compound|en|Cygnus|X|1}} Cygnus + X + 1 Head templates: {{en-proper-noun}} Cygnus X-1
  1. A placename.
    (astronomy, physics) The first generally accepted and confirmed black hole. A black hole in a high-mass X-ray binary (HMXB) with a blue supergiant companion (HD 226868), located in the constellation Cygnus.
    Categories (topical): Astronomy, Physics, Stars, Black holes Synonyms: Cyg X-1 [abbreviation] Derived forms: Cyg X-1 [abbreviation]
    Sense id: en-Cygnus_X-1-en-name-qC2w1H4F Disambiguation of Black holes: 56 44 Categories (other): English entries with incorrect language header, Pages with 1 entry, Pages with entries Disambiguation of English entries with incorrect language header: 54 46 Disambiguation of Pages with 1 entry: 53 47 Disambiguation of Pages with entries: 51 49 Topics: astronomy, natural-sciences, physical-sciences, physics
  2. A placename.
    (astronomy, physics) The high-mass X-ray binary star system containing this black hole and blue supergiant star.
    Categories (topical): Astronomy, Physics, Stars
    Sense id: en-Cygnus_X-1-en-name-U9NQTxMk Categories (other): English entries with incorrect language header, Pages with 1 entry, Pages with entries Disambiguation of English entries with incorrect language header: 54 46 Disambiguation of Pages with 1 entry: 53 47 Disambiguation of Pages with entries: 51 49 Topics: astronomy, natural-sciences, physical-sciences, physics
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This page is a part of the kaikki.org machine-readable English dictionary. This dictionary is based on structured data extracted on 2025-03-26 from the enwiktionary dump dated 2025-03-21 using wiktextract (fef8596 and 633533e). The data shown on this site has been post-processed and various details (e.g., extra categories) removed, some information disambiguated, and additional data merged from other sources. See the raw data download page for the unprocessed wiktextract data.

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